Automatic starting device for plant
阅读：483发布：2023-05-16
专利汇可以提供Automatic starting device for plant专利检索，专利查询，专利分析的服务。并且A target value or desired value for a fluid temperature at the exit of a plant after n samplings, is determined by an actual measurement of a fluid temperature at the exit of the plant as well as by a rate of temperature rise which has been set corresponding to said actual measurement. On the other hand, an enthalpy corresponding to a fluid temperature at the exit of the plant is determined, whereby the enthalpy after a predetermined lapse of time may be estimated by a variation rate obtained, and then an estimated fluid temperature at the exit of the plant corresponding to the estimated enthalpy is determined. The amount of fuel for plant is controlled, commensurate to the deviation from the target temperature, of the estimated temperature obtained by using an enthalpy.，下面是Automatic starting device for plant专利的具体信息内容。
1. A plant automatic starting device, which has means for controlling a fluid pressure at the exit of a plant so as to be maintained constant and a heat change function, characterized in that said device comprises: a temperature deriving means for sampling a fluid temperature at the exit of the plant at a given cycle and feeding same as an input; means for estimating the fluid temperature at the exit of the plant n sampling cycles after, by using an enthalpy which is possessed by the fluid pressure at the exit of the plant and corresponds to the output at the time of present sampling; means for setting a given rate of temperature rise for the fluid temperature at the exit of the plant; means for obtaining a target temperature of the fluid at the exit of the plant n sampling cycles after, from the rate of temperature rise and the initial value of the target value of the fluid temperature at the exit of the plant; and an adjusting means for controlling the total heat to be fed to the plant, commensurate to the deviation of the target temperatures from the estimated temperatures of the aforesaid means.
2. A plant automatic starting device as set forth in claim 1, wherein means for estimating temperature, n sampling cycles after consists of means for obtaining an enthalpy which is possessed by the fluid at the exit of the plant, and corresponds to the fluid temperature at the exit of the plant; means for obtaining, by estimation, the enthalpy n sampling cycles after, from the variation rate of the enthalpy and the magnitude thereof; and means for obtaining the fluid temperature at the exit of the plant which corresponds to The enthalpy estimated.
3. A boiler starting device which as means for controlling a fluid pressure at the exit of a boiler so as to be maintained constant at the starting time of the boiler, characterized in that said device comprises: a temperature deriving means for sampling the fluid temperature at the exit of the boiler at a given cycle and then feeding same as an input; a first means for estimating the fluid temperature at the exit of the boiler n sampling cycles after, by using enthalpy which is possessed by the fluid pressure at the exit of the boiler and corresponds to the output at the time of the present sampling; a second means for setting a given rate of temperature rise for the fluid temperature at the exit of the boiler; a third means for obtaining the target temperature of the fluid at the exit of the boiler n sampling cycles after, from the given rate of temperature rise and the initial value of the target value of the fluid temperature at the exit of the boiler; and an adjusting means for controlling the fuel amount to be fed to the boiler commensurate to the deviation of the output of the first means from that of the third means.
4. A boiler starting device as set forth in claim 3, wherein said first means consists of means for obtaining enthalpy which is possessed by the fluid at the exit of the boiler and corresponds to the fluid temperature at the exit of the boiler; means for obtaining, by estimation, the enthalpy n sampling cycles after, from the variation rate of the enthalpy and the magnitude thereof; and means for obtaining the fluid temperature at the exit of the boiler which corresponds to the enthalpy estimated.
5. A boiler starting device as set forth in claim 4, wherein when the deviation of the information obtained from the initial value of the target value for the fluid temperature at the exit of the boiler of the second means from the information obtained by way of temperature detecting means, is greater than the specified value, the initial value of the target value of the fluid temperature at the exit of the boiler is corrected, based on the information obtained by way of the temperature detecting means.
6. A boiler starting device as set forth in claim 5, wherein the initial value of the target value for the fluid temperature at the exit of the boiler is corrected even if the temperature of exhaust gas at the exit of the boiler exceeds the specified value.
7. A boiler starting device as set forth in claim 6, wherein when the boiler exhaust gas temperature exceeds the specified value, the amount of the fuel to be fed to the boiler is reduced.
8. A boiler starting device as set forth in claim 3, wherein said device is provided with a delay element representing the boiler characteristic and wherein control characteristic of the adjusting means may be varied, commensurate to the variation in plant characteristic which corresponds to the output from the temperature deriving means.
9. A boiler starting device as set forth in claim 4, wherein said device is provided with a delay element representing the boiler characteristic and wherein control characteristic of the adjusting means may be varied, commensurate to the variation in plant characteristic which corresponds to the output from the temperature deriving means.
10. A boiler starting device as set forth in claim 5, wherein said device is provided with a delay element representing the boiler characteristic and wherein control characteristic of the adjusting means may be varied, commensurate to the variation in plant characteristic which corresponds to the output of the temperature detecting means.
11. A boiler starting device as set forth in claim 6, wherein said device is provided with a delay element representing the boiler characteristic and wherein control characteristic of the adjusting means may be varied, commensurate to the variation in plant characteristic which corresponds to the output from the temperature deteCting means.
12. A boiler starting device as set forth in claim 7, wherein said device is provided with a delay element representing the boiler characteristic and wherein control characteristic of the adjusting means may be varied, commensurate to the variation in plant characteristic which corresponds to the output from the temperature detecting means.
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